Rivet



B. P. GRAY Dec. 19, 1933.

RIVET Filed Oct. 7, 1932 FIC-5.6.

FIC-3.7.

3S FIGJZ.

| VE NTOR "QA Attorncy Patented Dec. 19, 1933 UNITED STATES p RIvE'r YBertram Parrott Gray, Birmingham, England Application October 7,

1932, Serial No. 636,654,

and in 4Great Britain November 16, 1931 9 Claims.

This invention .relates to rivets for connecting anti-slip oranti-concussion pads to horse shoes and :has for its object to provide.a rivet which will be cheap to construct and eective in use,

1 5 and which can be secured and retained in position with greater easethan is possible with rivets of ordinary construction,`

l.to the drawing:-

Figure 1 is a 'perspective view showing .one

construction.. Y

Figure 2 is a perspective sectional view show.- ing a furtherconstruction.

VFigure 3 .is .a sectional perspective view showing a modification. Y

Figure 4 is a sectional perspective view showing a sti-ll .furthermodincation.

Figure 5 shows partly,i in section a still iurther modification. Y A iAFigure 8 is a .sectional lview, :of a fur-ther alterno nativeconstruction.

, Figurer'l is a sectional perspective view Eof Ya modification 'of theconstruction illustrated .in

Eigure l3. 1, 1 l

-8 .is a plan view showing `a horse .shoe .a5 with anti-slip. `oranti-concussion pads secured thereto -by means of rivets vaccording to.the present invention.

Figure .9 .is .a perspective view showing V-a lpad provided with a rivetaccording .to the present invention.

Figure 10 ',:isY a sectional view `showing the method lof vattaehmer-itbetweentherivet and pad illustrated :in Eigul'e Y,9.

. ligure ll'fis a islight modication-of the 1corndruntion Villustratedin Figure 10.

Figure 12 shows a :further modification of the ."illustratedin Figure1.0. i

Figure 13 .shows a still further modification.

In the lconstruction illustrated .in Figure 1 .e110 the Rivet rl. is olf`,tubular fform, .split `longitudinally at 2 :and formed from -a metalblank rolled cylindrical form, one end 3 being expanded into 11n.inverted .part conical head.

, In Figure 2 .the rivet illustrated in Figure 1 .as 'applied to connect:an anti-slip or anti-conrussian psd A410i rubber to a horse shoe 5, the

nivet being .inserted through holes in the members to due connected,.and the conical head porliion -3 fengagirg 'a .correspondingly `formedporitinnnf the hole im the `shoe 15, whilst the othei and 'of the rivetis expanded to connect the parts ami prevent thegpad 4 becomingdetached.

-Therivet .may `beexpaznded by a 4suitable tool,

F and if 'desired the'expanded end initially formed i on Ethernet may be.inserted in A:one pad 4, `the rivet being expanded into the hole in theshoe 5.

In the construction illustrated in Figure 3 a slightly modified form ofrivetY is used to connect a pad 7 to a horse shoe 8 this rivet 'havingan expanded end portion '9 o'f` length corre- 60 sponding with thethickness .of the pad '7, and a number of outwardly distorted tongues ofmetal l0 are provided in this end-9 to .engage or bite into the materialof the pad. 'These tongues are formed by partially severing portions ofthe rivet such Vas by forming inverted U shaped cuts at suitablepositions, the partially severed tongues being then distortedoutwardlyas shown in section in Figure 3. The .rivet may .be securedfinthe pad prior to the Vapplication to the shoe, and the end 11. of therivet may Vthen he" expanded into 'the hole in the shoe to secure therivet in position ,and connect the .pad to the shoe.

In Figure 4 is illustrated .a slight modication 75 of the constructionillustrated lin Figure 32, fthe expanded ends 12Vof the rivet 1'3 beingstepped or shouldered by using a correspondingly Ashaped expanding toolwhen forming the head upon one end of the -rivetand when expanding theother S0 `end -of the rivet to connect Ythe members.

In the construction illustrated .Figure `5 .the rivet is provided with.a part .con-.ical portion la aof length equal .to the thickness of thepad 7, and with a cylindrical portionY l5 passed 85 throughacorresponding .holle in .the shoe 8, -the end l0 being provided withteeth .or .projections 16 adapted to bite into the 4material .of the padand improve the grip thereon. In 'this construction'the teeth -16areiorrned by displacing .some 90 of the metal of the end .14 of therivet :outwardly in the form of barbs, and whenconnectedin Ithe `padthese teeth vor barbs .engage in the material thereof and assist in.preventing Vthe rivet pulling through the relatively .flexible material.of

the pad.

In this construction the rivet is retained .in position-by ianging theend over the .shoe as at 17.

In the modification illustrated in Figure 6 the 1-070 members 'land 3are-connected by .a .tubular rivet .18 of cylindrical forni fand splitlongitudinally Yas. at 19, the rivet being expanded or langed at eachend as at 20 to engage over .the edge `of the hole through which therivet is 105 passed. The ends of the rivet tare serrated or castellatedby cutting away Aportions 21 in .order that the Vflanging over operation.may .be facilitated. The members r(and 8 may be recessed adjacent kthe.aperture Vfor .the rivet so that the end of the rivet when flanged overis substantially flush with the surface of the member as illustrated inFigure 6.

In the modification illustrated in Figure '7 a rivet of square orrectangular section is used for connecting the members 7 and 8, thisrivet 22 being of similar general construction to that illustrated inFigure 3 with an expanded portion 23 and outwardly distorted tongues ofn'ietal 24 for engagement in the pad '7, and an expanded end 25 toretain the rivet in position and to connect the members. In thisconstruction the rivet is square or rectangular but may be of anynon-circular section, `being formed from a strip or blank of metal by asuitable pressing or stamping operation.

With a rivet of non-circular section a single rivet can be used toconnect two or more inembers and at the same time prevent relativerotation or twisting movement between them when in use. When the membersare connected by a single rivet of circular section there is apossibility that the members so connected may twist out of positionduring use, but with a rivet Vsuch as 22 the members may be connected atany selected angle after which the rivet secures them against angular orother movement.

In Figure 8 is illustrated a horse shoe 26 having anti-slipping oranti-concussion pads 27 each secured by means of a tubular rivet 28 inaccordance with the present invention.

v In Figure 9 an anti-slipping pad or stud 29 is provided with anattachment rivet 30 by means of which the pad or stud may be secured tothe horse shoe, and the projecting portion of this rivet is screwthreaded externally for engagement with an internally screw threadedhole in the shoe.

In Figure 10 is illustrated one method of attaching the rivet to the pador stud 29 by expanding the end 31and by providing outwardly distortedteeth or barbs 32 on this end as described with reference to theconstruction illustrated in Figure 5.

In the alternative construction illustrated in Figure 11 the rivet isprovided with an expanded end 33 in which are formed outwardly distortedteeth 34 formed as described with reference to the tongues 10 in theconstruction illustrated in Figure 3.

In the construction illustrated in Figure 12 the projecting portion 35of the rivet is cylindrical, with a smooth external surface, and atransverse pin 36 is secured in this portion as shown, the ends of thepin projecting slightly beyond the outer surface.

These projecting ends are adapted for engagement with the internal screwthread 37 in the hole in the horse shoe 38 and the pad 39 in which ismounted the enlarged end 40 of the rivet is attached to the shoe byscrewing the portion 35 of the rivet into the screw thread 37. Two ormore transverse pins may be provided if necessary, at spaced pointsalong the length of the portion 35. This is considerably cheaper thanscrew threading the projecting portion as in the construction shown inFigures 9 to l1.

In the construction illustrated in Figure 13 the rivet is formedinitially with an expanded end 41 and a projecting portion 42, thislatter portion being cylindrical prior to the application of the rivetto the shoe.

The expanded end is mounted in the pad 39, and to secure the latter tothe shoe 43, the projecting portion 42 of the rivet is inserted in acylindrical hole in the shoe, a tapered plug 44 being subsequentlydriven or forced into the end of the portion 42 to the positionillustrated in Figure 13.

The plug 44 distorts the end of the rivet and slightly expands the holein the shoe, the metal of the rivet being forced into intimate contactwith the metal of the shoe, so that the pad and the shoe are permanentlysecured together.

'I-he rivets illustrated in Figures 1 to 6 and 13 are of circularsection, but they may be of square or any other non-circular section asillustrated in Figure 7.

When rivets according to the present invention are applied forconnecting an anti-slip or anti-concussion pad to a horse shoe the endof 'the rivet located within the material of the pad will wear down atapproximately the same rate as the pad, and the attachment between thepad and the shoe decreases only slightly with wear and is effectivethroughout the whole life of the pad.

In addition the rivet forms a metal stud embedded in the pad andconsequently improves the gripping properties of the pad, whilst byforming the rivet of hollow construction road grit or other materialenters the centre of the rivet and forms an additional gripping orantislip means.

Further advantages of the rivets according to the present invention arethat the rivet is cheap to construct initially, is easily applied toconnect the members, is relatively of light weight compared with solidrivets as commonly used, and when formed by rolling or pressing from ablank of material, iseasily and cheaply manufactured.

What I claim then iszv 1. In combination with an anti-slip oranticoncussion pad, a tubular rivet for connecting said pad to a horseshoe, said rivet being split continuously from one end to the other, andhaving one end engaging with the pad, said end being open and exposed atthe underside of the pad to improve the anti-slip properties and theother end of said rivet projecting from the pad for engaging the shoe.

2. In combination with an anti-slip or anticoncussion pad, a tubularrivet for connecting said pad to a horse shoe, said rivet being splitcontinuously from one end to the other and having an expanded endengaging with the pad said end being open and exposed at the undersideof the pad to improve the anti-slip properties and a further expandedportion at the other end for engaging with the shoe.

3. In combination with an anti-slipor anticoncussion pad, a tubularrivet for connecting said pad to a horse shoe, said rivet having anexpanded end for engaging with the pad, said end being open and exposedat the underside of the pad to improve the anti-slip properties, lugsforced from the surface of said expanded end to project therefrom and toengage in the body of the pad, and the other end of said rivetprojecting from the pad for engaging the shoe.

4. In combination with an anti-slip oranticoncussion pad, a tbular rivetfor connecting said pad to a horse shoe, said rivet being splitlongitudinally, from one end to the other, and having an expanded endengaging with the pad, said end being open and exposed at the undersideof the pad to improve the anti-slip properties, portions forced from thesurface of said expanded end to project therefrom and to engage inthematerial of the pad and an expanded portion at the other end of therivet for engaging the shoe.

5. In combination with an anti-slip or anticoncussion pad, a tubularrivet for .connecting said pad to a horse shoe, said rivet having anexpanded end engaging with the pad, said endV being open and exposed atthe underside of the pad to improve the anti-slip properties, and anexternally screw threaded portion of said rivet projecting from said padfor engaging in the shoe.

6. In combination with an anti-slip or anticoncussion pad, a tubularrivet for connecting said pad to a horse shoe, said rivet having anexpanded end engaging with the pad, said end being open and exposed atthe underside of the pad to improve the anti-slip properties, lugsforced from the surface of said expanded end to project therefrom and toengage in the material of the pad, said lugs comprising tongues of metalintegral with, but partially severed from, said expanded end, and anexternally screw threaded portion of said rivet projecting from said padfor engaging in the shoe.

7. In combination with an anti-slip or anticoncussion pad, a tubularrivet for connecting said pad to a horse shoe, said rivet having anexpanded end for engaging with the pad, said end being open andV exposedat the underside of the pad to improve the anti-slip properties, a

shank portion for engaging the shoe, and a transverse pin secured insaid shank portion, the ends of said pin projecting from the surface ofsaid shank portion for engagement with a screw threaded hole in theshoe.

8. In combination with an anti-slip or anticoncussion pad, a tubularrivet for connecting said pad to a horse shoe, said rivet having anexpanded end for engaging with the pad, said end being open and exposedat the underside of the pad to improve the anti-slip properties, a shankportion for engaging the shoe, a transverse pin secured in said shankportion, the axis of said pin being inclined to the longitudinal axis ofthe shank portion, and the ends of said pin projecting from the surfaceof said shank portion for engagement with a screw threaded hole in theshoe.

9. In combination with an anti-slip or anticoncussion pad, a tubularrivet for connecting said pad to a horse shoe, said rivet having anexpanded end for engaging with the pad, said end being open and exposedat the underside of the pad to improve the anti-slip properties, a shankportion for engaging the shoe, and a transverse pin secured in saidshank portion, the ends of said pin projecting from the surface of saidshank portion for engagement with a screw threaded hole in the shoe.

BERTRAM PARRO'I'I GRAY.

